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Russia remains 'aggressor number one,' UK's MI5 spy agency chief warns in threat update

Ken McCallum said the ramp up in alleged Russian hybrid attacks across Europe had come as Russia's military progress in Ukraine was "minimal and horrifically costly."

  • Russia is the world's primary aggressor, according to MI5 chief Ken McCallum
  • MI5 has increased resources to counter state threats, more than during Cold War
  • Russia's hybrid warfare targets European nations amid Ukraine war since February 2022

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